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When an input element gets focused, iOS Safari tries to put it in the center by scrolling (and zooming.) | |
Zooming can be easily disabled using a meta tag, but the scrolling hasn't been quite easy. | |
The main quirk (I think) is that iOS Safari changes viewport when scrolling; i.e., toolbars shrink. | |
Since the viewport _should_ change, it thinks the input _will_ move, so it _should_ scroll, always. | |
Even times when it doesn't need to scroll—the input is fixed, all we need is the keyboard— | |
the window always scrolls _up and down_ resulting in some janky animation. | |
However, iOS Safari doesn't scroll when the input **has opacity of 0 or is completely clipped.** |